Hoisting apparatus



Patented Jan. l0, I899.

No. 6l7,380.

w. WILLIAMSON.

uolsr'me APPARATUS. (Application filed. Jun'a 24, 1898.)

(N0 Model.)

Wane/3% z "cams mans ca. Pnwamno.

UNITED STATES \VILLIAM \VILLIAMSON,

PATENT Gimme,

OF HAYV KEYE, IOWA.-

HOISTING APPARATUSa SPECIFICATION forming part of Letters Patent No.617,380, dated January 10, 1899 Application filed June 24,1898- SerialNo- 684,341. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM WILLIAMSON, a citizen of the United States,residing at I-Iawkeye, in the county of Fayette and State of Iowa, haveinvented certain new and useful Improvements in Hoisting Apparatus; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to hoisting apparatus, and more particularly tothat variety thereof employed in hoisting heavy objects, as stones,stumps, or the like, and removing them from the field or other placewhere they form an obstruction.

The object of my invention is to provide a readily-portable engine ofthe character specilied which will reliably perform its office and whichmay be manually operated by hand or by the application of horse-powerthereto, as will be hereinafter fully set forth.

In the accompanying drawings, forming a part of this application, Figure1 is a perspective view of my invention complete and in its operativeposition. Fig. 2 is a perspective detail of the hoisting apparatusproper, showin g the preferred clutch or brake mechanism.

Referring in detail to the several parts of myinvention, 1 and 2represent the side sections of. the frame suitably connected together ateitherend and reinforced in the middle portion thereof, if desired, asby the transversely-disposetksections 3, the frame thus constructedbeing supported upon standards 4 and braces 5, all of said parts beingcarried by a suitable form of truck or carrying-wheels, as shown.Preferably uponthe middle portion of the frames thus provided l mount insuitable bearings G the controlling-shaft 7, provided upon one end withthe transmittinggear 8 and upon the opposite end with the driving-wheel9, as clearly shown in Fig. 2. Disposed in suitable bearings 10 andarranged parallel with the shaft 7 is the winding-shaft 11, having uponits outer end the gear 12, designed to mesh with the transmitting-gear8, while attached to the shaft 11 in any preferred way arewinding-chains 13, by means of which the load is elevated when saidchain is Wound around the shaft 11, aswill beliereinafter moreparticularly pointed out.

It will be observed that the driving-wheel movement during the processof lowering the weight.

In order that the wheel 9 may be locked in any desired position, Iprovide the brake-lever 18, pivoted upon that side of the frame oppositethe driving-wheel, as by the bolt or pin 19, the free end of said leverextending across to the opposite side of the frame and sufficientlybeyond the same to permit the end thereof to loosely contact the innerface of the wheel 9, thereby coming in contact when in a proper positionwith one of the handlevers or guides 14, it being understood that saidlevers are preferably secured directly to the outer face of said wheel,thereby extending sufficiently beyond said face to provide an offset orstop, which when in contact with the end of the lever 18 will reliablyhold the wheel in a fixed position, thereby enabling the load to betransported to the place where it is to be deposited. I prefer to attachto the lower ends of the chains 13 in any suitable way the bracket orblock 20, in the central portion of which is swiveled the eyebolt orrotatable head.2 l, to the lower end of Which I attach a series ofchains 22, provided upon their lower ends with suitable grapplinghooks23, by means of which the object to be lifted may be readily engaged.

\ By the construction I have described it will be seen that I haveprovided a very powerful engiue by means of which a heavy load may beliftedor a stump extracted from the earth, as an immense lifting powermaybe brought to bear upon the object to be raised, since horse-powermaybe applied to the rope 15, it being understood that when a load ofless weight or resistance is to be raised handpower alone will be foundsu fficient when applied to the levers 14:. After the load has beenraised, as shown in Fig. 1, and it is desired to lower the same inposition the lever 24, which is connected to the lever 18 by the link25, is moved until the extreme end 26 of the lever 18 is forced inwardout of engagement with one of the stops formed by the lever 14, thusbringing the shoe 27, which is attached to the lever 18, into firmengagement with the periphery of the disk 17, thereby releasing thewheel 9 and permitting its slow or rapid rotation in accordance with therounded pressure brought to bear upon the disk 17 through said shoe.

The operation .of my hoisting-engine may be stated to be as follows: Themachine is brought in the desired position over the ob* jeet to beraised, when the hooks 23 are properly engaged with said object, and thehorses attached to the rope 15, which will cause the unwinding of saidrope upon the Wheel 9 and between the levers 14, thus inducing therotation of the shaft 11 through the mediation of the gears 8 and 12,and thereby Winding the chains 13 around said shaft and incidentallyraising the load. Vhen the load has been raised sufficiently to clearthe surface of the ground, and thus be in a position to be freelycarried to the desired place, the lower end of the lever 24 is forcedinward, thereby causing the free end of the lever 18 to engage one ofthe stops or levers 14, and thus prevent further rotation of the wheeluntil the free end of the lever 18 is forced inward out of engagementwith said stop.

From the foregoing description, considered in connection with theaccompanying drawings, it is thought that the construction and operationof my hoisting apparatus will be made fully apparent.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a checking or braking appliance for hoisting-engines,a series ofstops formed upon the driving wheel, a pivoted lever mounted onthecarrying-frame and designed to engage said stops; a brake-shoecarried by the end of said lever a disk or friction-face carried by saidwheel and designed to cooperate with said shoe, and suitable means tooperate the lever whereby it will engage with one of said stops or saiddisk, substantially as and for the purpose set forth.

2. In a hoisting apparatus the combination with a suitable carryingframeand truck therefor, of Winding shafts mounted thereon; meshing gearconnecting said shafts and a driving-wheel therefor; a series of leversor guides secured to said driving-wheel whereby the same may be manuallycontrolled; a piv oted horizontally disposed lever having a brake-shoeupon its free end 5 a disk carried by said driving-wheel designed tocooperate with said brake-shoe and suitable means to force the free endof said lever and the shoe carried thereon into or. out of engagementWith said disk, substantially as specified and for the purpose setforth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM WILLIAMSON.

\Vitnesses:

JOHN HACK, GEO. P. BYRNE.

